La Crescenta sits about 1,500 feet up in the Crescenta Valley, between the San Gabriel Mountains and the Verdugos, and that setting gives it hotter summer afternoons and colder winter nights than most of the cities around it. When your AC cannot keep up in August, or the furnace will not light on a cold January night, you need a local contractor who answers the phone, finds the real problem, and gets your home comfortable the same day.
La Crescenta grew up on the alluvial slope below the San Gabriel Mountains, where early settlers came for the dry, clean mountain air. Montrose followed as a planned subdivision in 1913, and the biggest wave of homes arrived after World War II. Today about 20,000 people live in La Crescenta-Montrose, an unincorporated part of Los Angeles County with its own close-knit feel.
That history shapes the HVAC work we do here. Many homes date from the 1940s through the 1960s, often with a furnace in a hall closet and AC added years later. Higher up the slope, homes above Foothill Boulevard sit on steeper lots with tighter side yards for equipment, while the streets near Honolulu Avenue and Montrose are flatter and more compact. We look at each home's age, layout, and spot on the hill before recommending anything.
La Crescenta is part of our northern service route along the 210, together with nearby communities in the Valley, so a Crescenta Valley call gets planned scheduling, not a long detour. Our technicians know the hillside streets, the debris basins and narrow roads above Foothill, and how quickly a heat wave or a cold snap can push an older system past its limits.

CSLB #959168, based in Canoga Park with a direct route to the Crescenta Valley along the 210. No call centers, no subcontractors.
La Crescenta's summer heat does not wait, and neither do we. Most repair calls in the 91214 and 91020 area are seen the same day they come in.
Written estimates before any work starts, no upsell pressure, and TOP CLUB members save 15 to 25 percent on repairs.
La Crescenta homeowners call us for everything from a quick repair on a system that quit in a heat wave to a full replacement in a 1950s home that still has its original furnace. Every job gets the same approach: a real diagnosis on site, a written estimate before work starts, and a system sized for the valley's hot summers and cold nights.
Fast, honest diagnosis for weak airflow, warm air, or a full breakdown, with same-day visits during the Crescenta Valley's hottest stretches.
Know more →Right-sized cooling for postwar La Crescenta homes and newer builds alike, based on a real load calculation for your lot and your spot on the slope.
Know more →Furnace and heater troubleshooting for cold Crescenta Valley nights, when mountain air drains down the slope and temperatures fall into the low 40s.
Know more →One efficient system for hot valley summers and cold winter nights, often eligible for rebates and financing.
Know more →A 1950s home with an original hall-closet furnace is a different project than a newer hillside home with a modern system in the attic, and the right setup depends on which one you have. We walk you through the real options for your home, from central AC to ductless zones, and install the one that fits your comfort needs and your budget.
A smart fit for additions, hillside rooms, and homes without a central system.
Know more →La Crescenta sits around 1,500 feet up in the Crescenta Valley, a narrow valley between the San Gabriel Mountains to the north and the Verdugo Mountains to the south. Those ridges keep most of the cooling ocean air out, so summer afternoons usually run 10 to 15 degrees warmer than the coast, with August highs in the high 80s and heat waves well into the 90s.
The same elevation brings real winter cold. Clear nights regularly fall into the low 40s, cold air drains down the slope from the mountains overnight, and light snow has dusted the higher streets in strong storms. The valley also gets more rain than the basin below, around 20 inches in a typical year, and the debris basins built after the 1934 flood are a reminder of how hard the mountains can push. A system here has to be ready for both seasons.
The San Gabriel and Verdugo ridges block the ocean breeze, pushing summer highs well above the coast.
At 1,500 feet and up, cold air drains down the slope and winter nights fall into the low 40s.
Santa Ana winds and wildfire smoke from the nearby forest put extra load on filters and outdoor coils.
We diagnose the actual issue on site and hand you a written estimate before anything starts.
We size the system to your home and schedule the work around your timeline, not ours.
Our crew cleans up after every job and walks you through the new system before we leave.
TOP AC Inc is headquartered at 21201 Victory Blvd, Suite 102, Canoga Park, CA 91303, and sends its own licensed technicians across the Crescenta Valley, including La Crescenta, Montrose, Briggs Terrace, the hillside streets above Foothill Boulevard, and the neighborhoods near Honolulu Avenue, covering ZIP codes 91214 and 91020.
EXCELLENT Based on 121 reviews Posted on יניב אליאסTrustindex verifies that the original source of the review is Google. Our old AC was constantly causing issues, so we decided to replace it. After getting five estimates, we chose Top AC — and we’re very happy we did. Ethen was professional, honest, and great to work with. The price was fair and right in the middle of the market. The team arrived on time, did a clean and proper installation, and coordinated smoothly with our roofing company during our roof replacement. Highly recommend Top AC — reliable, professional, and excellent service.Posted on Orit RavidTrustindex verifies that the original source of the review is Google. Can’t recommend TOP AC enough! My heater stopped working and they showed up the same day I called, diagnosed the issue quickly, and had it fixed right away. Super professional, honest, and the price was very fair. Such a relief to work with a company that’s reliable and efficient. I’ll definitely be using them again.Posted on Gary BatchleyTrustindex verifies that the original source of the review is Google. The guys were great and showed us how to use everything.Posted on Jasmin RoggTrustindex verifies that the original source of the review is Google. We had a new HVAC system installed and also replaced the old vents. Service and installation was professional, good and quick. My allergy is finally gone!!! I am over the moon happy. Thank you, Adi 😊😊😊Posted on Jonathan BrayTrustindex verifies that the original source of the review is Google. Great experience with these guys. Our furnace kept cutting out and Ethan was very helpful and responsive on the phone. He sent Frank out and Frank was fantastic. Fixed it (fuse sensor) and answered all my questions and charged what they said they would. Will definitely be using them again. Thanks!Posted on Roxanna ZibachTrustindex verifies that the original source of the review is Google. Top AC is the best!! Ethan and Frank provide excellent customer service, reliable work and all for a great price!!Posted on evi starTrustindex verifies that the original source of the review is Google. Amazing value and impressive results. The initial cost was reasonable, and the crew really knew their stuff. They left everything spotless and took the time to explain the whole process. My ducts are sparkling clean! Great job!
EXCELLENT Based on 223 reviews Posted on Tae Jung K.Verified Problem: AC is running but no air is coming out. Quality: Inspected every single details with care . It was a clogged filter that needs to be replaced. Thanks to Frank. Value: It took less than hour to fix the issue. Great value. No hidden fee.Posted on Alison C.Verified Great experience with Top AC. Ethan was responsive and easy to connect with to schedule a tech for routine maintenance. Frank was the technician and he was polite, informative about what he was seeing, communicative, and friendly. This company is trustworthy and I've already recommended to my neighbors. Prices are very fair and I've really glad I've come across this company as I will continue to utilize them for my HVAC service and future needs. Thank you!Posted on Johnny A.Verified Our old AC was constantly causing issues, so we decided to replace it. After getting five estimates, we chose Top AC ,and we're very happy we did. Ethen was professional, honest, and great to work with. The price was fair and right in the middle of the market. The team arrived on time, did a clean and proper installation, and coordinated smoothly with our roofing company during our roof replacement. Highly recommend Top AC reliable, professional, and excellent service.Posted on Lee D.Verified Top AC is incredibly honest and trustworthy. I needed an urgent repair and even though they couldn't fit me in right away, they recommended I get a quote and inspection from another company so I could get help ASAP. That company quoted me $1,200. A few days later, Top AC came out, diagnosed the real issue as a small part (not what the other company claimed), and fixed it in an hour for $375. Itay is super helpful and trustworthy, and Frank is excellent at what he does. I won't use any other HVAC company.Posted on Gabby O.Verified I don't even know where to begin about how much I love this company. We have a nice house, but that doesn't mean I have any extra money. Our furnace went out and I called the company that had installed (but they always seem to charge me a lot) to come out and check it. The technician came up and calmly told me it was some sort of switch that needed to be replaced and the estimate would be $1265. I don't have $1265 but I was just curious how much the parts were so I looked it up. The parts themselves come to $16. A friend of mine recommended Adi & Top AC Heating and Air-conditioning, so I called them for a second opinion. Frank the technician came out, looked at it, pressed the reset button and it was fixed. It took him all of five minutes and all I was only charged was the diagnostic fee. Plus, he showed me how to press the button myself next time should it happen again! I can't believe another company was willing to take $1300 from me for NOTHING. Be careful of who you trust, but I can tell you that you can trust Top AC fully!!!!Posted on Donna T.Verified The first time I called, Top AC sent someone to repair my father's AC. Everything went smoothly. The second time I called this company, the problem was my father's heater. After speaking with Adi about the problem, he sent Frank to take a look at the problem. The problem was a simple fix, but Frank noticed that the pipe for the gas was loose. He recommended that I call my plumber to fix it. Overall, I appreciate this company's honesty and availability.Posted on Trent C.Verified Extremely polite and diligent. Got back to me in record time, putting this highly anxious first time home owner at ease. High marksPosted on Jamie S.Verified Our AC broke down on a Saturday. Isaac was fast and came out within 90 minutes. Good experience.Posted on Fred F.Verified I made request for immediate assistance with malfunctioning AC. Top AC sent Frank to my home in Burbank. He was very helpful and informative. It turned out that my rooftop unit, which he thoroughly inspected, was in good shape but there was an issue with my thermostat. Frank changed the program on the thermostat and it has been working fine since. I really appreciate good service when I see it. The fee was very reasonable.Posted on Eli S.Verified Great service! The specialists that came to do the work were amazing!! So glad we worked with them!

Built for La Crescenta homeowners who want priority service through every summer heat wave and worry-free maintenance year-round. Members get annual tune-ups, 15 to 25 percent off repairs, extended warranty coverage, and first-in-line scheduling from day one.

Designed for La Crescenta business owners, property managers, offices, and multi-unit properties. Keep every unit running through peak season with planned maintenance, priority response, and repair protection that limits downtime.
Priority service, repair discounts, and peace of mind starting at $15 per month.
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